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EPDM O-Rings & Seals

Ethylene-propylene is a copolymer of ethylene and propylene (EPM), or, in some cases, a terpolymer due to the addition of a diene monomer (EPDM). EPDM O-rings have great weathering resistance. A special characteristic of EPDM is its resistance to certain brake and hydraulic fluids (including Pydraul® and Fyrquel and Skydrol®).

EPDM O-rings and seals have a good resistance to steam. It needs to be taken into consideration that EPDM is not suitable with most hydrocarbons, such as oils, gasoline, kerosene and petroleum oils.

NewDealSeals supplies EPDM O-rings & seals in any dimension and in various compounds. Can we be of service with our expertise? Call +31(0)226362233 or mail us

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Black EPDM o-rings and EPDM seals in multiple colours

Specifications EPDM

  • Temperature range:
    -55 to 150 °C
  • Shore:
    30 / 40 / 50 / 60 / 70 / 80 / 90
  • Relative Cost:
    Rating symbol: Low
  • Tradenames:
    Buna EP® (LANXESS), Keltan® (LANXESS), Nordel® (DuPont), Vistalon® (ExxonMobil Chemicals)
  • Common names:
    EPDM, EPM, Ethylene-propylene
  • Colours:
    Black. Other colors on request.

EPDM Characteristics

Resistance EPDM
Abrasion Rating symbol: Good to Excellent
Acid Rating symbol: Good
Base Rating symbol: Excellent
Chemical Rating symbol: Excellent
Cold Rating symbol: Good to Excellent
Flame Rating symbol: Poor
Heat Rating symbol: Excellent
Resistance EPDM
Oil Rating symbol: Poor
Ozon Rating symbol: Excellent
Set Rating symbol: Good to Excellent
Steam Rating symbol: Excellent
Tear Rating symbol: Good to Excellent
Water Rating symbol: Excellent
Weather Rating symbol: Excellent
Propertys EPDM
Dynamic properties Rating symbol: Good to Excellent
Electrical properties Rating symbol: Good
Gas impermeability Rating symbol: Good
Tensile strength Rating symbol: Good to Excellent

EPDM performs well in

  • Alcohols
  • Automotive brake fluids
  • Dilute acids & dilute alkalis
  • Ketones (MEK, acetone)
  • Silicone oils & greases
  • Steam (up to 204 °C)
  • Water

EPDM does not perform well in

  • Aliphatic & aromatic hydrocarbons
  • Di-ester based lubricants
  • Halogenated solvents
  • Petroleum oils

Typical EPDM Applications

  1. Outdoor weather resistant products
  2. Drinking water seals
  3. Coolant hoses
  4. Roofing membranes
  5. Pond liners